| 摘要 |
The hydraulic oil is based on natural fatty acid esters. The basic material of the hydraulic oil is selected from the following esters of tall oil or their mixtures: ester of a polyhydroxy compound of neopentane, such as trimethylolpropane ester (TMP ester), pentaerythritol ester, trimethyloletha ne ester, trimethylolbutane ester, neopentyl glycol ester, and poly(ethyleneglycol) ester, and it further contains at least an oxidation inhibitor, a corrosion inhibitor, an antifoam agent, and an EP lubricant.</S DOAB>
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